Analysis and Design of Residential Building Implementing Flat Slab Using Staad Pro

CHAPTER - 1

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1.1

INTRODUCTION In general normal frame construction utilizes columns, slabs &Beams.

However it may be possible to undertake construction without providing beams, In such a case the frame system would consist of slab and column without  beams. These types of slabs are called flat slab, since their behavior resembles the bending of flat plates. The term flat slab means a reinforced concrete slab with or without drops, supported generally without beams, by columns with or without flared column heads.  flat slab may be solid slab or may have recesses formed on the soffit so that the soffit comprises a series of ribs in two directions. The recesses may be formed by removable or permanent filler blocks.

1.2TYPES OF FLAT SLABS:

There are three different kind of flat slabs   

!lat slab without drop and column head. !lat slab with column head and no drop. !lat slab with column head and drop.

COMPONENTS OF FLAT SLABS: DROPS:

To resist the punching shear which is predominant at the contact of slab and column "upport, the drop dimension should not be less than one #third of  panel length in that $irection. $irection.

COLUMN HEADS: 2

1.1

INTRODUCTION In general normal frame construction utilizes columns, slabs &Beams.

However it may be possible to undertake construction without providing beams, In such a case the frame system would consist of slab and column without  beams. These types of slabs are called flat slab, since their behavior resembles the bending of flat plates. The term flat slab means a reinforced concrete slab with or without drops, supported generally without beams, by columns with or without flared column heads.  flat slab may be solid slab or may have recesses formed on the soffit so that the soffit comprises a series of ribs in two directions. The recesses may be formed by removable or permanent filler blocks.

1.2TYPES OF FLAT SLABS:

There are three different kind of flat slabs   

!lat slab without drop and column head. !lat slab with column head and no drop. !lat slab with column head and drop.

COMPONENTS OF FLAT SLABS: DROPS:

To resist the punching shear which is predominant at the contact of slab and column "upport, the drop dimension should not be less than one #third of  panel length in that $irection. $irection.

COLUMN HEADS: 2

%ertain amount of negative moment is transferred from the slab to the column at the support. To resist this negative moment the area at the suppor t needs to be increased. This is facilitated by providing column capitalheads

COLUMN STRIP :

%olumn strip means a design strip having a width of '.() I,, but not greater than '.() I, on each side of the column centre#line, where I, is the span in the direction moments are being determined, measured centre to centre of supports and I, is the #span transverse to I

MIDDLE STRIP :

*iddle strip means a design strip bounded on each of its opposite sides  by the column strip.

PANEL:

+anel means that part of a slab bounded on#each of its four sides by the centre #line of a %olumn or centre#lines of adacent#spans.

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Fig 1 Flat slab it! "#$% %a&'l ( )$l*+& !'a"

1., ABOUT STAAD P#$

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"T$ +ro (''- is the most popular structural engineering software  product for $ model generation, analysis and multi#material design. It has an intuitive, user#friendly /0I, visualization tools, powerful analysis and design facilities and seamless integration to several other modeling and design software products. The software is fully compatible with all 1indows operating systems but isoptimizedfor1indows2. !or static or dynamic analysis of bridges, containment structures, embedded structures 3tunnels and culverts4, pipe racks, steel, concrete, aluminum or timber buildings, transmission towers, stadiums or any other  simple or comple5 structure, "T$ +ro has been the choice of design  professionals around the world for their specific analysis needs

1.- OER ALL PROCEDUR E IN /OR0 IN /ITH

STAAD.PRO

1..1 MODELENER ATION:

There are two methods for building a model and assigning the structure data using "T$ +ro. a. 0sing the command file  b. 0sing the graphical model generation mode or graphical user interface 3/0I4.

1..2 PER FOR MIN ANALYSIS AND DESIN

"T$ offers two analysis engines 6 the "T$ engine for  general purpose "tructural nalysis and $esign and the "T7$89: engine for advanced analysis options. The *odeling *ode of the "T$ :nvironment is used to prepare the structural input data. fter the input is prepared, we may choose the analysis engine depending up on the nature of the analysis re;uired. If we are  performing the "T7$89:. dvanced analysis, several additional  parameters need to be defined specific to the nature of the analysis. 5

1.., POST-PROCESSIN

The +ost +r ocessing mode of "T$ offers facilities for on# screen visualization and verification of the analysis and design results. It allows displacements, forces, stresses, etc# both graphically and numerically.

1. OB3ECTIES  

To analyze the properties of flat slab in residential buildings. nalyze and design using "T$$ pro.

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CHAPTER -2

LITERATURE REIE/ 2.1 LITERATURE REIE/ A&al4sis A&" D'sig& $5 Flat Slab A&" #i" Slab A&" T!'i# C$st C$+%a#is$&

mit . "athawane & 7.". $eotale 3(''ive load

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